[Xen-devel] [PATCH] x86/hvm/viridian: set shutdown_code in response to CrashNotify

[Paul Durrant <paul.durrant@xxxxxxxxxx>]

When Windows writes the CrashNotify bit in the CRASH_CTL MSR then we know
it is crashing, so set the domain shutdown code appropriately.

Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
---
Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/hvm/viridian.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/x86/hvm/viridian.c b/xen/arch/x86/hvm/viridian.c
index 486065182c..294cf486cc 100644
--- a/xen/arch/x86/hvm/viridian.c
+++ b/xen/arch/x86/hvm/viridian.c
@@ -645,6 +645,10 @@ int wrmsr_viridian_regs(uint32_t idx, uint64_t val)
         if ( !ctl.u.CrashNotify )
             break;
 
+        spin_lock(&d->shutdown_lock);
+        d->shutdown_code = SHUTDOWN_crash;
+        spin_unlock(&d->shutdown_lock);
+
         gprintk(XENLOG_WARNING, "VIRIDIAN CRASH: %lx %lx %lx %lx %lx\n",
                 v->arch.hvm_vcpu.viridian.crash_param[0],
                 v->arch.hvm_vcpu.viridian.crash_param[1],
-- 
2.11.0


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